What are the cheapest airlines flying from St. Louis to Copenhagen round-trip?

Our cheapest airline available from St. Louis to Copenhagen is Delta. Our recent data shows that you can find tickets from as low as $656 on this airline. Additional options worth looking into are KLM and Scandinavian Airlines, starting at $657 and $678 round-trip. These flights start at 24% lower than the current average price 3 months from now.

What is the cheapest day to fly from St. Louis to Copenhagen?

Travelers seeking maximum savings on their St. Louis to Copenhagen flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Copenhagen ranges from 0.8 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Copenhagen when rainfall is around 0.8 in.

If weather is an important factor for your trip to Copenhagen, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular airlines that fly from St. Louis to Copenhagen?

Before booking your flight from St. Louis to Copenhagen check out the most popular airlines for this route: American Airlines, Air Canada or British Airways.

What is the cheapest day to fly round-trip from St. Louis to Copenhagen?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 84% on the overall cost on flights from St. Louis to Copenhagen.

How far in advance should I book a flight from St. Louis to Copenhagen?

To save on the cost of your flight from St. Louis to Copenhagen, book at least 23 days before your planned departure. Booking around this time can save you about 57% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $613 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,123.

What is the cheapest month to fly from St. Louis to Copenhagen?

February can be a great time to fly to Copenhagen from St. Louis with a flight ticket averaging about $866. Cheapflights users have found deals in the month of February for as cheap as $551. The most expensive prices can be found in the month of December.

Can I find deals for flights from St. Louis to Copenhagen that include hotel bookings?

Yes. In addition to deals on St. Louis to Copenhagen flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Copenhagen?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Copenhagen.

Can I find deals for business class flights from St. Louis to Copenhagen?

Yes. Cheapflights offers flight deals from St. Louis to Copenhagen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$484+ Flights from St. Louis to Copenhagen

Q: How much does it cost to fly round-trip from St. Louis to Copenhagen?

Airfare is below average for this route at the moment. St. Louis to Copenhagen flights typically cost between $797 and $1,102 in September. The cheapest round-trip price found within the last 3 days was $656 on Delta (Sep 9-Sep 18).

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Cheapflights Tip: The best prices from Lambert-St Louis to Kastrup Copenhagen are usually found in February or January, booked 22 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Copenhagen

Round-trip from	$656 (Delta)
One-way from	$484 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$972

From Lambert-St Louis to Kastrup Copenhagen

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One-way flight from Lambert-St Louis to Kastrup Copenhagen

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Highest demand for flights based on searches. 6% potential increase in price ($62 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from St. Louis to Copenhagen

Cheapest flights from St. Louis to Copenhagen
Explore the most affordable flight options available from St. Louis to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Tue 9/93:30 pmSTL - CPH

1 stop11h 25mDelta

Wed 9/1712:30 pmCPH - STL

1 stop17h 39mDelta

Deal found 7/29

$656

Tue 10/1412:14 pmSTL - CPH

1 stop14h 41mKLM

Tue 10/219:00 amCPH - STL

1 stop14h 40mKLM

Deal found 7/28

$657

Wed 9/243:36 pmSTL - CPH

1 stop12h 14mScandinavian Airlines

Thu 10/21:25 pmCPH - STL

1 stop16h 59mScandinavian Airlines

Deal found 7/29

$678

Thu 8/281:15 pmSTL - CPH

1 stop15h 00mBritish Airways

Mon 9/11:15 pmCPH - STL

2 stops40h 59mBritish Airways

Deal found 7/29

$696

Wed 12/33:50 pmSTL - CPH

1 stop19h 15mLufthansa

Sun 12/76:55 amCPH - STL

1 stop14h 00mLufthansa

Deal found 7/29

$710

Wed 12/31:00 pmSTL - CPH

2 stops13h 15mUnited Airlines

Sun 12/76:50 amCPH - STL

1 stop14h 05mUnited Airlines

Deal found 7/27

$715

Sat 8/91:30 pmSTL - CPH

1 stop10h 40mMultiple Airlines

Fri 8/226:10 amCPH - STL

1 stop14h 20mMultiple Airlines

Deal found 7/28

$718

Wed 8/2710:16 amSTL - CPH

2 stops17h 59mAmerican Airlines

Mon 9/11:15 pmCPH - STL

2 stops16h 44mAmerican Airlines

Deal found 7/28

$725

Best flights from St. Louis to Copenhagen
Discover carefully curated flight deals from St. Louis to Copenhagen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Tue 9/93:30 pmSTL - CPH

1 stop11h 25mDelta

Thu 9/189:00 amCPH - STL

1 stop18h 05mDelta

Deal found 7/29

$656

Tue 10/1412:14 pmSTL - CPH

1 stop14h 41mKLM

Tue 10/219:00 amCPH - STL

1 stop14h 40mKLM

Deal found 7/28

$657

Wed 9/243:36 pmSTL - CPH

1 stop12h 14mScandinavian Airlines

Thu 10/21:25 pmCPH - STL

1 stop16h 59mScandinavian Airlines

Deal found 7/29

$678

Thu 8/281:15 pmSTL - CPH

1 stop15h 00mBritish Airways

Mon 9/11:15 pmCPH - STL

2 stops40h 59mBritish Airways

Deal found 7/29

$696

Sat 8/91:30 pmSTL - CPH

1 stop10h 40mMultiple Airlines

Fri 8/226:10 amCPH - STL

1 stop14h 20mMultiple Airlines

Deal found 7/28

$718

Wed 10/89:15 amSTL - CPH

1 stop18h 35mUnited Airlines

Wed 10/296:45 amCPH - STL

1 stop14h 10mUnited Airlines

Deal found 7/28

$720

Wed 8/2710:16 amSTL - CPH

2 stops17h 59mAmerican Airlines

Mon 9/11:15 pmCPH - STL

2 stops16h 44mAmerican Airlines

Deal found 7/28

$725

Last-minute flights from St. Louis to Copenhagen
Discover last-minute flight deals from St. Louis to Copenhagen. Data last updated July 30, 2025 and is based on user searches.

Mon 8/41:29 pmSTL - CPH

1 stop14h 21mScandinavian Airlines

Mon 8/181:25 pmCPH - STL

1 stop15h 02mScandinavian Airlines

Deal found 7/30

$831

Mon 8/41:16 pmSTL - CPH

1 stop14h 59mBritish Airways

Mon 8/189:45 pmCPH - STL

2 stops25h 04mBritish Airways

Deal found 7/30

$1,257

Sat 8/91:30 pmSTL - CPH

1 stop10h 40mMultiple Airlines

Fri 8/226:10 amCPH - STL

1 stop14h 20mMultiple Airlines

Deal found 7/28

$718

Sat 8/91:15 pmSTL - CPH

2 stops15h 00mAmerican Airlines

Fri 8/222:00 pmCPH - STL

2 stops16h 05mAmerican Airlines

Deal found 7/28

$740

Thu 8/1411:28 amSTL - CPH

1 stop15h 37mKLM

Mon 8/256:00 amCPH - STL

2 stops15h 37mKLM

Deal found 7/30

$738

Wed 8/274:54 pmSTL - CPH

1 stop11h 21mAmerican Airlines

Mon 9/18:40 amCPH - STL

2 stops16h 48mAmerican Airlines

Deal found 7/28

$711

Thu 8/281:15 pmSTL - CPH

1 stop15h 00mBritish Airways

Mon 9/11:15 pmCPH - STL

2 stops40h 59mBritish Airways

Deal found 7/29

$696

Fri 8/293:30 pmSTL - CPH

1 stop19h 55mLufthansa

Thu 9/47:10 pmCPH - STL

1 stop25h 20mLufthansa

Deal found 7/29

$1,252

Sun 8/316:59 pmSTL - CPH

1 stop28h 31mDelta

Tue 9/99:00 amCPH - STL

1 stop19h 29mDelta

Deal found 7/29

$662

Sun 8/311:30 pmSTL - CPH

1 stop10h 40mUnited Airlines

Mon 9/812:25 pmCPH - STL

1 stop14h 32mUnited Airlines

Deal found 7/29

$841

One-way flights from St. Louis to Copenhagen
Search for one-way flight options from St. Louis to Copenhagen. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Tue 8/51:00 pmSTL - CPH

3 stops51h 25mMultiple Airlines

Deal found 7/28

$484

Tue 8/53:59 pmSTL - CPH

1 stop11h 06mKLM

Deal found 7/28

$493

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 9/9

3:30 pm-9:55 am

1 stop11h 25m

Kastrup Copenhagen

Thu 9/18

9:00 am-8:05 pm

1 stop18h 05m

$656

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 10/14

12:14 pm-9:55 am

1 stop14h 41m

Kastrup Copenhagen

Tue 10/21

9:00 am-4:40 pm

1 stop14h 40m

$657

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 9/24

3:36 pm-10:50 am

1 stop12h 14m

Kastrup Copenhagen

Thu 10/2

1:25 pm-11:24 pm

1 stop16h 59m

$678

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 8/28

1:15 pm-11:15 am

1 stop15h 00m

Kastrup Copenhagen

Mon 9/1

1:15 pm-11:14 pm

2 stops40h 59m

$696

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 8/9

1:30 pm-7:10 am

1 stop10h 40m

Kastrup Copenhagen

Fri 8/22

6:10 am-1:30 pm

1 stop14h 20m

$718

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 10/8

9:15 am-10:50 am

1 stop18h 35m

Kastrup Copenhagen

Wed 10/29

6:45 am-2:55 pm

1 stop14h 10m

$720

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 8/27

10:16 am-11:15 am

2 stops17h 59m

Kastrup Copenhagen

Mon 9/1

1:15 pm-10:59 pm

2 stops16h 44m

$725

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 8/5

1:00 pm-11:25 pm

3 stops51h 25m

$484

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 8/5

3:59 pm-10:05 am

1 stop11h 06m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from St. Louis to Copenhagen

Have a flexible travel schedule? Discover the best time to fly to Copenhagen from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Copenhagen

How far ahead should I book a flight from St. Louis to Copenhagen?

The best time to book flights from St. Louis to Copenhagen is 22 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. Louis to Copenhagen?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Copenhagen (average of $523). Flying from St. Louis to Copenhagen in June is currently the most expensive (average of $912). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to CPH?

It’s optimal to fly from St. Louis to Copenhagen in the morning. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip from St. Louis to Copenhagen?

What’s the top layover airport for flights from St. Louis to Copenhagen?

Philadelphia (PHL) – chosen by Cheapflights users on 67% of 1-stop itineraries from St. Louis to Copenhagen on Cheapflights.

What’s the cheapest layover airport for flights from St. Louis to Copenhagen?

Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $754.

What’s the fastest layover option from St. Louis to Copenhagen?

Flights via Philadelphia (PHL) have the shortest average one-way travel time for 1-stop routes: 11h 06m.

Which airport typically offers the quickest layover for flights from St. Louis to Copenhagen?

Flights via Philadelphia (PHL) offer the fastest connection on this route, with an average layover time of 1h 51m.

Reviews of airlines servicing Copenhagen

See what other customers who have flown with Delta, KLM, and United Airlines from St. Louis to Copenhagen have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,383 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,896 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,453 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from St. Louis to Copenhagen round-trip?
Our cheapest airline available from St. Louis to Copenhagen is Delta. Our recent data shows that you can find tickets from as low as $656 on this airline. Additional options worth looking into are KLM and Scandinavian Airlines, starting at $657 and $678 round-trip. These flights start at 24% lower than the current average price 3 months from now.
Can I find deals for flights from St. Louis to Copenhagen that include hotel bookings?
Yes. In addition to deals on St. Louis to Copenhagen flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Copenhagen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Copenhagen.
Can I find deals for business class flights from St. Louis to Copenhagen?
Yes. Cheapflights offers flight deals from St. Louis to Copenhagen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Copenhagen?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Copenhagen (average of $523). Flying from St. Louis to Copenhagen in June is currently the most expensive (average of $912). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Kastrup

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Alternative routes for St. Louis to Copenhagen

Kansas City to Copenhagen flights

Other flights to Copenhagen

Top 8 airlines flying from St. Louis to Copenhagen

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$590	Average$912	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$625	Average$960	FlexibilityNo cancel fee	On-time75%
Lufthansa	Cheapest$626	Average$783	FlexibilityNo cancel fee	On-time76%
American Airlines	Cheapest$639	Average$1,057	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$653	Average$900	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$655	Average$950	FlexibilityNo cancel fee	On-time67%
Scandinavian Airlines	Cheapest$661	Average$962	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$663	Average$1,076	FlexibilityNo cancel fee	On-time70%

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$484+ Cheap flights from St. Louis (STL) to Copenhagen (CPH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Copenhagen with Cheapflights

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3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Kastrup Copenhagen are usually found in February or January, booked 22 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Copenhagen

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Copenhagen

Cheapest flights from St. Louis to CopenhagenExplore the most affordable flight options available from St. Louis to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from St. Louis to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Copenhagen that are best for you.

Best time to book a flight from St. Louis to Copenhagen

Have a flexible travel schedule? Discover the best time to fly to Copenhagen from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Copenhagen

How far ahead should I book a flight from St. Louis to Copenhagen?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Copenhagen. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from St. Louis to Copenhagen?

What is the cheapest time of day to fly from STL to CPH?

Find hourly flight availability from St. Louis to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

How much does it cost to fly round-trip from St. Louis to Copenhagen?

What’s the top layover airport for flights from St. Louis to Copenhagen?

Share of 1-stop round-trip flights from St. Louis to Copenhagen chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from St. Louis to Copenhagen?

Average round-trip fare for 1-stop flights from St. Louis to Copenhagen, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from St. Louis to Copenhagen?

Shortest average travel time for 1-stop one-way flights from St. Louis to Copenhagen, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from St. Louis to Copenhagen?

Average layover duration for 1-stop one-way flights from St. Louis to Copenhagen, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Copenhagen

See what other customers who have flown with Delta, KLM, and United Airlines from St. Louis to Copenhagen have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Copenhagen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from St. Louis to Copenhagen round-trip?

Can I find deals for flights from St. Louis to Copenhagen that include hotel bookings?

How can I find direct flights from St. Louis to Copenhagen?

Can I find deals for business class flights from St. Louis to Copenhagen?

What is the cheapest month to book a flight from St. Louis to Copenhagen?

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Alternative routes for St. Louis to Copenhagen

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Top 8 airlines flying from St. Louis to Copenhagen

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Cheapest flights from St. Louis to Copenhagen
Explore the most affordable flight options available from St. Louis to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.